Dismountable packaging box



Dec. 1, 1953 R. ALLAVENA DISMOUNTABLE P ACKAGING BOX Filed 001;. 13, 1949 Q /cameo@ Ham/ffm ,i t c MI 'By HoPh/ey Patented Dec. 1, 1 953 f v UNITED STATES PATENT -oFFicE Riccardo Allavena, Milan, Italy Application October 13, 1949, Serial No. 121,165

Claims priority, application Italy October 22, 1948 2 Claims.

It is the object of the invention to provide a sturdy disassemblable box easily assembled and taken to pieces and apt to be lreturned in a condition requiring minimum space.

I'he dsassemblable box according to the present invention is constituted by a bottom, a top, and four sides fitted in with each other as well as with two perimetral grooves of the bottom and top respectively, the box thus assembled being locked by means of convenient external strapping. One example of embodiment of the present invention is illustrated in the accompanying drawing, wherein:

Fig. 1 represents an axonometric view and Fig. 2 a section of a disassemblable box according to the invention taken on line 2 2 of Fig. 1.

The walls of the box are constituted by `a layer of planks l arranged lengthwise and held together by a second inner layer of planks 2 arranged crosswise. The planks of the layers l are alternately of diierent lengths so as to fit in with each other along the vertical edges of the box. The bottom 3 and top 4 of the box are constituted too of a double layer of planks iixed crosswise. The dimensions of the sides of the inner layer however are smaller than those of the outer layer, by the double of the thickness of a side. The two layers are centred with respect to each other and on the perimeter of the outer layer there is applied a frame 5 I formed by an L-shaped angle bar. One side of said angle bar forms with the butt originated by the different dimensions of the layers, a perimetral groove with which the sides are made to fit in.

In register with the parallel edges at bottom and at top, the planks of the layer l come to be ush with those of the layer 2.

The top and bottom, which along the connection with the side-walls resist with one layer of planks only, are at that point reinforced with the angle-piece 5.

The assembled box is locked for example by strapping with ordinary packaging bands 8 and 9 or Wires etc. On the sides of the angle-piece there are provided small recesses 6 for seating the bands so as to prevent them from slipping oi. The box built up in this way needs no sub sidiary means for connecting the individual parts, such as hinges, wooden pins, hooks etc.

At the ends of each side-wall of the box there are nailed on, iiush with the longer plank or planks of the said side-wall, joint coverings l designed to reinforce and protect the edges. The joint coverings corresponding with the front 2, edge of the box represented in the drawing are in dotted lines in order to show the indentation.

0f course the constructive particulars may vary according to requirements. The side-Walls may be constituted for example by a single panel shaped at its ends so as to allow for fitting in conveniently, or by single-layer planks provided with splines.

The perimetral grooves of the bottom and top may be obtained for example by applying the angle-piece only to one layer of planks of larger thickness, wherein thenecessary butt has been provided. The development of the angle-piece may possibly lbe reduced to some indispensable sections for obtaining the indentation of the sides and the fastening of the band. The grooves at bottom and at top may even be obtained for example by means of splines nailed to each other; the joint coverings may be dispensed with.

Having now particularly described and ascertained the nature of my said invention, and in what manner the same is to be performed, I declare that what I claim is:

1. A generally rectangular knockdown shipping crate comprising four side walls each formed by an inner and an outer layer of wooden boards disposed parallel one with another, alternate boards of one layei` being shortened by the wall thickness of the boards of the respective layer and positioned to abut against corresponding boards of the respective layer of the adjacent side walls so as to form closed interlocking side walls, the boards of the other layer of each side wall being disposed at a right angle to the boards of the rst mentioned layer, a bottom wall and .a top Wall each composed of an inner layer and an outer layer of parallel wooden boards disposed at right angles relative to each other, the perimeter defined by the outer layer of the bottom and top wall respectively corresponding to the outer perimeter defined by the outer layer of the four side walls and the perimeter defined by the inner layer of the bottom and top wall respectively corresponding to the inner perimeter dened by the inner layer of the four side walls whereby the inner layer of the bottom and top wall respectively fit into the space confined by the side walls and the marginal portions of the outer layer of the bottom and top Wall protruding beyond the respective inner layer abut ilush against the respective end faces of the side walls, and L-shaped angle irons secured to the said protruding marginal portions at the four sides of said top and bottom wall, one flange of each of said irons being parallel to the plane of the said outer layer, the second fiange hugging the flank of said marginal portions and depending toward the inner layer of the bottom and top Wall respectively so as to form a perimetral groove between the inside of each second flange and the outer perimeter of the said inner layer. the said grooves being engaged by the top and bottom edge respectively of the four side walls, thereby securing the said side walls in 'a erateorming spatial relatiom ship.

2. A shipping crate as dened in claim 1, wherein the said L-shaped irons form a frame corresponding in length and width to the .lefh and width of the outer layer of the bottom and top wall respectively.

RICCARDO AILAVENA.

References Cited in the le of this patent UNITED STATES PATENTS Number 10 Number Name .Date Baker Feb. 20, 1883 Beems May 17, 1904 Bigby et al Oct. 2, 1923 McSweeney Oct. 25, 1932 FOREIGN PATENTS Country Date Great Britain Jan. 25, 1897 Australia May 23, 1933 Great Britain May 2, 1922 

